– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 am Mon 12 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Mon 12 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 9mm), mostly falling on Wed morning. Very mild (max 13°C on Wed afternoon, min 6°C on Mon morning). Wind will be generally light. | Days 4–6 Weather SummaryModerate rain (total 16mm), heaviest on Sat morning. Warm (max 21°C on Fri afternoon, min 6°C on Sat night). Wind will be generally light. | |||||||||||||||||
Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  |  |  |  | |  | | | | | | | |
clear | clear | some clouds | cloudy | cloudy | light rain | mod. rain | rain shwrs | rain shwrs | some clouds | clear | clear | clear | some clouds | some clouds | rain shwrs | rain shwrs | clear | |
Cloud base (m) | 9200 | 2400 | 1900 | 900 | 600 | 750 | 6900 | 8700 | 8950 | 650 | 2350 | |||||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | 3 | 5 | 0.2 | 0.1 | — | — | — | — | — | — | 16 | 0.2 | — |
max °C | 10 | 12 | 9 | 10 | 12 | 10 | 11 | 13 | 12 | 17 | 20 | 16 | 20 | 21 | 15 | 11 | 11 | 7 |
min °C | 6 | 11 | 7 | 9 | 10 | 10 | 10 | 12 | 11 | 12 | 19 | 15 | 15 | 18 | 11 | 10 | 10 | 6 |
chill °C | 6 | 11 | 7 | 9 | 10 | 10 | 10 | 12 | 11 | 12 | 19 | 15 | 15 | 18 | 10 | 8 | 9 | 6 |
Freezing level m | 2600 | 3200 | 2900 | 2700 | 2600 | 2800 | 2900 | 3500 | 3800 | 3700 | 3700 | 3800 | 3800 | 3650 | 3200 | 1950 | 1800 | 1800 |
 | 7:22 | — | — | 7:24 | — | — | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — |
 | — | 6:24 | — | — | 6:22 | — | — | 6:21 | — | — | 6:19 | — | — | 6:16 | — | — | 6:15 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 9mm), mostly falling on Wed morning. Very mild (max 13°C on Wed afternoon, min 6°C on Mon morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Moderate rain (total 16mm), heaviest on Sat morning. Warm (max 21°C on Fri afternoon, min 6°C on Sat night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.